The contract that Matt Cassel opted out of was a two-year deal he signed in 2013 that was worth $3.7 million per season. His new contract is worth $10 million over two years, according to cbssports.com.

A.J. Jefferson, a third-year cornerback picked up by the Vikings on Friday from Arizona for a conditional 2013 draft pick, started seven games for the Cardinals last season before "it got a little rough for me," but said he was looking forward to a new beginning. was one of the last men off the field at Vikings practice Monday.